Table Of Contents - Yamaha 25BMH Service Manual

Table of Contents

How To Use This Manual4
Important Information8
Symbols12
Specifications12
Periodic Check And Adjustment12
Table Of Contents14
General Information Contents16
Identification18
Serial Number18
Starting Serial Numbers18
Safety While Working20
Fire Prevention20
Ventilation20
Self-Protection20
Oils, Greases And Sealing Fluids20
Good Working Practices22
Disassembly And Assembly24
Special Tools26
Measuring26
Outillage Special27
Removing And Installing30
Features And Benefits32
Power Unit32
Ignition System36
Ignition Timing In Neutral40
Cooling System44
Tiller Handl52
Handle Grip52
Bracket And Bottom Cowling56
Technical Tips60
Carburetor60
Slow Air Jet60
Mid Range64
High Engine Speed68
Ignition Timing72
Specifications Contents76
General Specifications78
Maintenance Specifications82
Lower Unit86
Electrical88
Dimensions92
D'entretien94
Tightening Torques98
Specified Torques98
Boitier Electrique99
Couples Specifies99
Daten99
Motor99
Elektrik99
Anzugsdrehmomentwerte99
Drehmomentwerte99
Especificaciones De Mantenimiento99
Unidad Inferior99
Sistema Eléctrico99
Torsiones De Apriete99
Torsiones Especificadas99
General Torques100
Torsión De Apriete General101
Periodic Check And Adjustment Contents102
Maintenance Interval Chart104
Top Cowling108
Fuel System108
Checking The Top Cowling Fit108
Checking The Fuel Line108
Carenage Superieur109
Verification De La Fixation109
Checking The Fuel Filter110
Checking The Fuel Pump110
Checking The Fuel Joint110
Systeme De Carburant111
Verification Du Filtre De111
Carburant111
Verification De La Pompe De Carburant111
Verification Du Raccord De Carburant111
Control System112
Adjusting The Ignition Timing112
Systeme De Commande113
Reglage Du Calage De L'allumage113
Réglage Du Régime De Ralenti Du Moteur135
Adjusting The Engine Idle Speed136
Adjusting The Start-In-Gear Protection Device140
Réglage Du Dispositif De Protection Contre Le Démarrage En Prise141
Measuring The Compression Pressure142
Moteur143
Mesure De La Pression De Compression143
Checking The Cooling Water Discharge144
Checking The Gear Oil Level144
Changing And Checking The Gear Oil144
Systeme De Refroidissement145
Verification De L'evacuation De L'eau De Refroidissement145
Bloc De Propulsion145
Verification Du Niveau145
Transmission145
Kühlungssystem145
Antriebseinheit145
Überprüfung Des145
Kühlwasserablaufs145
Überprüfung Des Getriebeöls145
Wechseln Und Prüfen Des145
Descarga Del Agua De145
Comprobación Del Nivel145
Cambio Y Comprobación Del Aceite De Engranajes145
Checking The Lower Unit146
Comprobación De La Unidad Inferior147
General148
Checking The Anode148
Checking The Spark Plugs148
Comprobación De Los149
Comprobación De Las Bujías149
Checking The Propeller150
Hélice151
Checking Bolts And Nuts152
Lubrication Points152
Pernos Y Las Tuercas153
Puntos De Lubricación153
Fuel System Contents158
Removing The Fuel Joint, Fuel Filter And Fuel Pump160
Assembling The Fuel Filter162
Fuel Joint, Fuel Filter, And Fuel Pump162
Disassembling The Fuel Pump164
Assembling The Fuel Pump168
Removing The Carburetor170
Disassembling The Carburetor172
Checking The Carburetor176
Assembling The Carburetor178
Installing The Carburetor180
Power Unit Contents182
Removing The Recoil Starter186
Disassembling The Recoil Starter188
Checking The Recoil Starter192
Assembling The Recoil Starter196
Installing The Recoil Starter202
Removing The Flywheel Magnet204
Installing The Flywheel Magnet206
Disconnecting The Leads And Stays208
Removing The Power Unit212
Removing The Magnet Base And Magnet Control Lever214
Installing The Magnet Control Lever220
Removing The Itake Manifold And Reed Valves222
Checking The Reed Valves224
Installing The Intake Manifold224
Removing The Cylinder Head226
Checking The Cylinder Head228
Checking The Thermostat230
Installing The Cylinder Head And Cylinder Head Cover232
Installing The Thermostat232
Removing The Exhaust Cover234
Checking The Exhaust Cover236
Installing The Exhaust Cover236
Removing The Crankcase238
Assembling The Oil Seal Housing240
Installing The Crankcase240
Removing The Crankshaft And Cylinder Body244
Checking The Cylinder Body246
Checking The Piston248
Calculating The Piston-To-Cylinder Clearance250
Checking The Piston Pins And Small-End Bearings252
Checking The Piston Rings254
Checking The Crankshaft256
Installing The Piston And Piston Rings262
Installing The Crankshaft And Piston262
Lower Unit Contents266
Removing The Lower Unit270
Removing The Propeller274
Installing The Propeller274
Installing The Trim Tab274
Removing The Water Pump276
Checking The Water Pump Housing278
Checking The Impeller And Insert Cartridge278
Checking The Woodruff Key278
Installing The Impeller And Water Pump Housing278
Removing The Shift Rod280
Removing The Propeller Shaft Housing282
Disassembling The Propeller Shaft Housing284
Disassembling The Propeller Shaft286
Checking The Reverse Gear290
Checking The Bearing290
Checking The Propeller Shaft Housing290
Roulement291
Assembling The Propeller Shaft Housing292
Roulement À Aiguilles293
Attache De Roulement À293
Aiguilles293
Treiberstange L3293
Nadellageransatz293
Agujas293
Checking The Dog Clutch294
Checking The Propeller Shaft294
Checking The Shift Plunger294
Checking The Spring294
Comprobación Del295
Removing The Drive Shaft296
Removing The Drive Shaft Bearing298
Disassembling The Forward Gear298
Checking The Pinion And Forward Gear300
Checking The Drive Shaft300
Checking The Bearings300
Assembling The Forward Gear300
Installing The Drive Shaft302
Disassembling The Lower Case304
Checking The Drive Shaft Sleeve306
Checking The Needle Bearing308
Assembling The Lower Case308
Shimming310
Selecting The Pinion Shims312
Selecting The Forward Gear Shims316
Selecting The Reverse Gear Shims320
Backlash324
Measuring The Forward Gear Backlash324
Measuring The Reverse Gear Backlash326
Bracket Unit Contents330
Disassembling The Steering Handle332
Steering Handle334
Checking The Steering Handle336
Assembling The Steering Handle336
Removing The Bottom Cowling340
Checking The Bottom Cowling344
Installing The Bottom Cowling344
Disassembling The Shift Actuator346
Removing The Bracket352
Checking The Shift Actuator352
Assembling The Shift Actuator354
Removing The Upper Case358
Checking The Upper Case362
Installing The Upper Case362
Disassembling The Upper Case364
Checking The Exhaust Manifold366
Assembling The Upper Case366
Removing The Steering Arm368
Checking The Steering Arm370
Installing The Steering Arm370
Removing The Clamp Brackets372
Checking The Clamp Brackets378
Installing The Clamp Brackets380
Electrical System Contents384
Electrical Component386
Electrical Components Analysis388
Digital Circuit Tester388
Measuring The Peak Voltage388
Peak Voltage Adapter388
Measuring A Low Resistance390
Ignition System Wiring Diagram392
Checking The Ignition Spark Gap394
Checking The Spark Plug Caps396
Removing The Spark Plug Caps396
Installing The Spark Plug Caps396
Checking The Ignition Coils398
Checking The Charge Coil400
Checking The Pulser Coil402
Cdi Unit404
Checking The Cdi Unit406
Ignition Control System Wiring Diagram410
Checking The Engine Stop Switch412
Charging System Wiring Diagram414
Checking The Lighting Coil416
Checking The Rectifier/Regulator418
Trouble Analysis Contents422
Trouble Analysis424
Trouble Analysis Chart424
Troubleshooting For Peak Voltage436
Wiring Diagram442